Device for entering dividends correctly by digits and/or product ejecting in a calculating machine



United States Patent [72] Inventors Andreas Metschnabl Nurnberg; Georg Beikufner, Rothenbach, Pegnitz, Germany [21] Appl. No. 800,960 [22] Filed Feb. 20, 1969 [45] Patented Dec. 15, 1970 [73] Assignee Diehl Nurnberg, Germany [32] Priority Feb. 22, 1968 [33] Germany [31 No. 1,574,545

[54] DEVICE FOR ENTERING DIVIDENDS CORRECTLY BY DIGITS AND/0R PRODUCT EJECTING IN A CALCULATING MACHINE 3 Claims, 1 Drawing Fig.

[52] U.S. CI 235/63, 235/60 [51 Int. Cl. G06c 19/00 [50] Field ot'Seareh 235/63.21, 63.221, 60(Mult.)

[56] References Cited UNITED STATES PATENTS 3,097,790 7/1963 Julich 235/63 3,279,693 10/1966 Eggebrecht et a1. 235/60 3,285,511 11/1966 Canevari 235/6025 3,302,875 2/1967 Kollmannetal 3,397,837 8/1968 Gassinoetal Primary Examiner-Stephen J. Tomsky Altorney- Walter Becker the carriage through the actuating member and release detent during movement into a turning-on position. Abutment means carried by the control element and extending into shift area of the control member during release of the control element for holding the same until the control element releases the control member due to carriage movement in one direction extends over the striker means while also under spring tension for attaining end position and turning on machine drive operation, The actuating member has an engagement arm for pivoting of the release detent and an angular guide pin receiving portion with respect to which the release detent is movable A lateral pivot portion of the control member is provided for approximately vertical lift journaling of the actuating member.

PATENTEDDEEI slam 30-54734? W n/roe;

DEVICE FOR ENTERING DIVIDENDS CORRECTLY BY DIGITS AND/OR PRODUCT EJECTING IN A CALCULATING MACHINE The present invention relates to a device for digitally correctly entering dividends and/or ejecting the product or output in a calculating machine. More specifically, improvements are made in a fully automatic multiplying and dividing fourspecies calculating machine of a type disclosed in U.S. Pat. No. 3,279,693-Eggebrecht and Metschnabl, issued Oct. 18, 1966, belonging to the assignee of the present invention. Also reference can be made to U.S. Pat No. 3,302,875-Kollmann, Machmer and Burkhardt, issued Feb. 7, 1967 to the assignee of the present invention also relating to four-species calculating machines. A copending application Ser. No. 496,190- Metschnabl and Burkhardt, filed Oct. 14, 1965, now U.S. Pat. No. 3,432,094, discloses details of a fourspecies calculating machine belonging to the assignee of the present invention. The four-species calculating machine for which the improvement of the present invention is made has a stationary machine part and a counting indication. carriage shiftable especially by means of two springs tensionable in common with each other particularly to operate in opposite directions one after another for tripping or triggering the carriage with respect to the stationary machine part. The calculating machine includes a decimal or quantity stop shaft rotatable over a known type of comma-adjusting shift means and journaled to be axially shiftable toward both sides resiliently in direction of carriage shift from a center position and within limits of axial shifting movement, The decimal or quantity stop shaft has a helically formed displaced stop or trip pin means or nose for a cam or carrier plate of the-counter carriage. After release of the counter carriage, the decimal or quantity stop shaft arrests or holds the counter carriage in a predetermined position by means of striking engagement of the carrier plate or cam against one of the stop or trip pins. The decimal or quantity stop shaft by means of a minimal axial shift to left over a product output turn-on control rod or towards the right over a motorized dividend entry turn-on control rod actuates a single revolution coupling for releasing or tripping pawl, detent or latch.

In the arrangement according to U.S. Pat. No. 3,279,693 noted previously, the control and release operating procedures associated with the dividend entry are brought about during the depressing of the division key (2). The release of the starting rod for the dividend entry of the machine operation is brought about entirely by means of the carriage over the trip shaft and the aforementioned control rod. The division key is greatly operatively affected by means of the plurality of dividend amounts to be entered, as required by the control measures. Since the individual control and release or tripping steps must additionally be brought about in the exactly correct sequence, the release or tripping and control mechanisms must be exactly adjusted. The necessary shift spacing in addition required also an increase of the key stroke.

The purpose of the present invention is on the one hand to decrease the necessary force exertable for actuation of the division key and to match the stroke of the key with respect to the other functional keys. On the other hand, the purpose is to unload considerably the division key from the control and release or tripping functions which result from the impulsing or control action hindering itself and to divert these functions from the machine actuated shift rods.

Details of the present invention will become more apparent from the description referring to an exemplifying embodiment illustrated in the drawing.

The figure of the drawing shows in a fragmentary perspective view the parts essential for understanding of the invention including the functional key arrangement and the carriage together with the comma-triggering shaft and the turn-on device for actuation of the machine operation.

The machine comprises, for purposes of the invention, an actuating member engageable in the scope of a release or unblocking pawl or flap actuator of the carriage during depression of the division key (z) while simultaneously releasing the coAntrol rod from feeling engagement with the stop shaft. Further, the machine includes a control operator connected to the actuating member and coupled during actuation of the division key to one shift spring tensioned in the rest position so as to effect release of the carriage during displacement in the turning on position through the actuating member and the release pawl or flap. The machine also includes a stop or register associated with the control rod and which extends during release of the control rod in the shifting scope of a tab or flange on the control operator held stationary thereby until the control rod releases the control operator by means of the carriage moving toward the right over the striker shaft as well as under the tension of the shifting spring permitting the reaching of the end position and then turning on the machine operation.

The inventive embodiment effects not only power actuated occurence of sequential control but release operating procedure in the rest positioning of the machine with tensioned shifting springs. The German Pat. No. 973,l63 shows examples of the known embodiments of procedure and operation. The machine effects only the impulsing or control action after appropriate key actuation itself and in addition hinders and avoids also erroneous shift possibilities and permits avoidance of sensitive adjustment measures.

Referring to the drawing, a blocking lever 117, which is swingable about an axis 118 and operates together with a blocking flap 119, is connected by way ofa key shaft 120 to a division key 6. The blocking flap 119 which fits into a slit 121 of the blocking lever 117 when the key 6 is depressed and the blocking lever 117 is pivoted thereby, is journaled in a right sidewall 111 of the machine. Upon a projecting stub 122 of the blocking flap 119 there is secured a lever 123 which is connected linkingly at one end with a stroke-rod 124. The stroke-rod 124 extends along the right side wall 111 rearwardly into the area of means for turning on actuating the machine. There the stroke-rod 124 is linked to a coulisse lever or rocker arm 125 which is swingable about an axis 126. A spring 153 holds the stroke-rod 124 in rest condition in the illustrated position. The coulisse lever or rocker arm 125 operates in a manner requiring no further detailed disclosure over a side pin or lug130 upon a detent or pawl lever 127 which in turn engages over a detent or pawl flange or tab 128 of a coupling shift lever 129. When the key 6 is depressed for effecting release, the stroke-rod 124 is displaced forwardly and the coulisse lever or rocker arm therewith becomes pivotable in clockwise direction over the pin 130 of the detent or pawl lever 127. A shift spring 132 engages against a coupling shift lever 129 which is secured upon a shaft stud 84' of a coupling-shift shaft 84 journaled to project with respect to the sidewall 111. The shift spring 132 is anchored at its other end on the machine wall 111. The shift spring 132 is tensioned in a known manner particularly at the end of the machine operation with respect to the shaft 84 and in this tensioned position the shift spring 132 is secured by the previously noted members 127, 128. In addition an electric switch means 131 is actuated by the previously noted turn-on members 125 through 129. The electric switch means 131 operatively connects a drive motor when the key 6 is depressed and the stroke-rod 124 is pushed rearwardly.

A lateral post or pin 133 is secured to the blocking lever 117 and the post 133 extends through the cutout or opening 134 on the side wall 111. A control guide member 135 is journaled upon this post 133 and the rearward part of the member 135 slides as guided by means of a slot 136 upon a post pin or stud 137 provided on the sidewall 111. The control guide member 135 has an outwardly bent flange or extension 138 which engages -upon a control rod or member 82 extending into the area thereof. The flange or extension 138 in the rest position of the key 6 and control guide member 135, or in other words when the flange or extension is shifted rearwardly, holds the control rod or member 82 in a pivoted or swung position against the force of a spring 83.

The control guide member 135 further engages upon a lateral pin 139 which fits into a curved slit 140 of an actuating member 141 approximately vertically shiftable. A pin 142 serves as an upper guide and is laterally secured in a horizon-. tally shiftable control arm 143. The other end of this control arm 143 is linked to the coupling shift lever 129 and therefore is actuated thereby under urging of the shift spring 132 engaging the coupling shift lever 129. The actuating member 141 carries an arm 144 extending at an incline upwardly with a shift curve or cam 145. 1

If the actuating member 141is lifted, then the arm 144 stands in frontof a lateral stud 146 pivotable or swingable about an axis or pivot member 147 journaling the release detent orarm 148 of a counter carriage30JThe carriage 30 is horizontally shiftable upon an axis or pivot member 149 and prior to triggering or release of the division key 6 is stationary under the tension of a spring 32 illustrated in a simplified manner.

In addition to a ratchet or escapement 115, the carriage 30 also includes a driver or tang which holds or stops. the morefor less further shifted carriage 30 in the desired position according to a particular position of a stepped engagement body 65. In the figure of the drawing, a nose 63 is formed as an abutment or engagement stop. The effectiveness of the engagement body 65 results due to turning of 'a striker shaft 51 carried thereby over a comma-inserting driver, or segmental gear 55, for example by means of a comma preselecting shifter not illustrated in detail. As disclosed in detail in the U.S. Pat. No. 3,279,693, the striker shaft 51 is shiftable from an inter.- mediate position limited to the left and right. During the shifting to the right, the driver or segmental gear 55 engages against the control rod member 82 and pivots or swings the same against the force of a spring 83 in a'clockwise direction.

A stop or abutment 151 is additionally provided on the control rod member 82 and this stop or abutment 151 cooperates with a flange or extension 152 on the control member 143.

The foregoing'shift and control means effect the following sequence of triggering steps:

Upon depression of the division key 6 the blocking lever 117 pivots the flap 119'in a clockwisedirection and simultane ously pulls or moves the control guide member 135 toward the left. The pin 139 slides in the curve or cam path 140 toward the front and lifts the actuating member 141 sufficiently far enough so that the arm 144, particularly the curve or cam 145 thereof extends into the area of the stud or projecting pin 146 of the release flap or detent 148. The flange or extension 138 bent outwardly releases the control rod member 82 with respect to the tension of the spring 83 as soon as the control guide member 145 slides toward the front. The control rod member 82 engages against the peripheral surface side of the comma-inserting driver or segmental gear 55. The stop or abutment 151 arrives or moves into the shifting area or scope of the flange or extension 152 on the control pull member 143.

when these presetting procedures are carried out, the coulisse or rocker arm 124 is pivoted or swung so far also over the stroke-rod 124 and over'the detent flange 128 of the coupling shift lever 129 that the detent lever 127. is released. Under the tension of the shift spring 132, the control pull member 143 is displaced toward the right. In so doing the arm 144 of the actuating member 141 engages against the stud or pin 146, the curve or cam 145 lifting, raising or withdrawing the release flap and unlatching the carriage 30 which runs or winds to the right under tension of the spring 32 until the tang or striker plate 71 engages against the striker nose 63.

Since the control pull member 143 readily is again held fixed after a short shifting movement, namely, during engagement of the striker flange or extension 152 against the abutmentor stop 151 of the control rod member 82, and since the heretofore angular displacement due to the coupling shift lever 129 being insufficient to pivot or swing the coupling shift shaft 84 in the effective drive coupling triggering or release position, the electric switch means 131 is next entirely actuated and operativelyconnects the driving motor. A drive motor is illustrated in the patent disclosures referred to previously for background information.

Only when the driver or tang .71deflects the striker shaft 51 toward the right after running up against the striker nose 63 under the tension of the spring 32, does the striker shaft swing or pivot. More particularly, the comma-turn-on driver or segmental gear 55 pivots or swings the control rod member 82 against the force of the engaging spring 83 so far in clockwise manner that the striker flange or extension 152 of the control pull member 143 glides through into the space or gap between the control rod member 82 and the. abutment or stop 151 thereof. Only now can the control pull member 143 drop fully or fall through under the tension of the shift spring 132. Simultaneously, the coupling shift lever 129 shifts or connects the drive or operating coupling into operative relationship by way of the triggering or release shaft 84.

In a well-known manner not discussed here in further detail, at the end of the machine operating procedure, the shift spring 132 is again tensioned with the resetting of the coupling trigger or release shaft 84 and the control pull member 143 is reset in the rest position thereof.

It is, of course, to be understood that the present invention is, by no means limited to the particular'construction shown in the drawings, but also comprises any modifications within the scope of the appended claims. 5

We claim: v

1. Apparatus for accurate positioning of dividend entry, product output and the like .in calculating machine having a function key, especiallyin a fully automatic multiplying and dividing four-species calculating machine having a stationary machine part, having a counter carriage shiftable by spring force from an intermediate position and limited in both of opposite longitudinal directions along an engaging shaft particularly by oppositely directed spring means sequentially triggered yet tensioned in common with each other, having a rotatable decimal-point-inserting driver with a'striker means for a driver'portion of the counter carriage held in a predetermined position after release of the carriage, whereby the shaft upon minimum longitudinal shift in one direction actuates a single-revolution coupling-releasing detentwith respect to a product-output-connecting control means and in an opposite direction actuates a single revolution motorized dividendentry-connecting control means, comprising: an actuating member engageable upon depressing the function key during simultaneous unlatching of the striker means, a control element pivotal in the area of the release detent of the carriage and engageable with respect to the striker means, a control member normally under spring tension in a rest position connected to said actuating member and adapted to release the carriage through said actuating member and release detent during movement into a turning-on position, and abutment means carried by said control element and extending into shift area of said control member during release of said control element for holding the same until said control element releases said control member due to carriage movement in one direction extending over said striker means while also under spring tension for attaining end position and turning on arm for pivoting of the release detent and an angular guide pin receiving portion with respect to which the release detent is movable are provided with said actuating member.

3. Apparatus according claim 1, in which a lateral pivot portion of said control member is provided for approximately vertical lift journaling of said actuating member. 

